The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2025
Filed:
Nov. 25, 2021
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Tim Hungerland, Cologne, DE;
Rainer Protte, Dormagen, DE;
Assignee:
Covestro Deutschland AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/08 (2006.01); B29C 45/00 (2006.01); B29K 69/00 (2006.01); B29K 105/16 (2006.01); B29K 507/04 (2006.01); B29K 509/08 (2006.01);
U.S. Cl.
CPC ...
G02B 5/0808 (2013.01); B29C 45/0001 (2013.01); B29C 45/0013 (2013.01); B29C 45/0053 (2013.01); B29C 2045/0079 (2013.01); B29C 2945/7604 (2013.01); B29K 2069/00 (2013.01); B29K 2105/16 (2013.01); B29K 2507/04 (2013.01); B29K 2509/08 (2013.01); B29K 2995/0013 (2013.01); B29K 2995/0022 (2013.01); B29K 2995/0094 (2013.01);
Abstract
The invention relates to a filler-containing multi-layer structure on the basis of a polycarbonate composition, having a metal layer as a reflective layer and having a balanced property profile of CLTE, CLTE ratio, heat conductivity and lustre. This multi-layer structure can be used, inter alia, for reflectors or as a mirror element in head-up displays. Expanded graphite and burned silicon dioxide are contained as fillers. In the composition provided according to the invention, there is no need for an additional heat sink when implementing the component.